var is_images = document.images;

function preload_images() {
	if (is_images) {
		img_frame_menu_active_lt = new Image();
		img_frame_menu_active_rt = new Image();
		img_frame_menu_active_rb = new Image();
		img_frame_menu_active_lb = new Image();
		img_frame_menu_active_lt.src = "/f/frame_menu_active_lt.gif";
		img_frame_menu_active_rt.src = "/f/frame_menu_active_rt.gif";
		img_frame_menu_active_rb.src = "/f/frame_menu_active_rb.gif";
		img_frame_menu_active_lb.src = "/f/frame_menu_active_lb.gif";
	}
}

function wopen (url, name, w, h)
{
window.open(url,name,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,copyhistory=no,width='+w+',height='+h+',top=100,left=100'); 
}
function wopen_scroll (url, name, w, h)
{
window.open(url,name,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,copyhistory=no,width='+(w+20)+',height='+h+',top=100,left=100'); 
}